Reflections and Groups
In addition to choosing reflections settings for individual objects, you can adjust settings
for an entire group. Reflections settings for a group override the settings of individual
layers in the group. For example, if an object in a group is not set to receive reflections,
turning that setting on for the whole group forces the individual object to receive them.
Turning off the setting for the group allows the objects’ settings to act as expected.
Cast Reflections settings work differently. If the group is set to cast reflections, individual
objects’ reflections can still be turned off (or set to Reflections Only). However, if the group
is set to not cast reflections at all, individual objects never cast a reflection, regardless of
their setting.